What Readers Need to Know

  • A SIPP is a personal pension; a SSAS is an occupational pension sponsored by an employer.
  • Both attract pension tax relief and follow the £60,000 annual allowance for 2026/27.
  • SIPPs are regulated by the FCA; SSAS schemes by HMRC and The Pensions Regulator.
  • Fee structures differ — SIPPs often percentage or flat platform fees, SSAS schemes typically fixed plus transactional.
  • Personal advice is recommended for transfers, consolidations and SSAS structures.

Introduction

The SIPP and the SSAS are the two most flexible UK-registered pensions. Both let savers — or trustees — make wide Investment decisions inside a pension wrapper, with the same headline tax reliefs. Yet they sit on different sides of UK pension law: SIPPs are personal pensions, SSAS schemes are occupational pensions.

This article compares the two in detail for the 2026/27 tax year, focused on fees, HMRC rules, investment control and tax. It is general information for UK readers and not personal advice. Anyone considering opening or restructuring a SIPP or SSAS should engage a regulated financial adviser and, in the case of a SSAS, an SSAS specialist administrator.

Headline Definitions

SSAS

A Small Self-Administered Scheme is an occupational pension scheme established by a UK employer, normally a Limited Company. It can have up to 11 members, who are usually trustees. A professional administrator is normally appointed to support compliance with HMRC and The Pensions Regulator rules.

Fees Compared in Detail

Typical SSAS fee structure

For pots above a few hundred thousand pounds — especially with commercial property — SSAS schemes can be cost-competitive with full SIPPs. For smaller pots, low-cost platform SIPPs typically come in cheaper.

  • Establishment fee — one-off scheme set-up cost.
  • Annual administration fee — fixed amount per scheme or per member.
  • Property fees — purchase, annual property administration, Lease drafting, lender work.
  • Loanback fees — specific to authorised employer loans.
  • Transactional fees — for in-specie contributions, transfers in and out, and benefit events.
  • Independent valuation, legal and accountancy fees as required.

HMRC and Regulatory Rules

Both wrappers operate under the Finance Act 2004 framework and the HMRC Pensions Tax Manual. Reporting and oversight bodies differ.

  • SIPP regulator: Financial Conduct Authority (operator and adviser conduct), with HMRC for tax-registered scheme rules.
  • SSAS regulators: HMRC and The Pensions Regulator (where the scheme has more than one member).
  • Both wrappers must register with HMRC and obtain a Pension Scheme Tax Reference (PSTR).
  • Both are subject to the 'taxable property' regime prohibiting direct residential property holdings with limited exceptions.
  • SSAS loans to the sponsoring employer are allowed under HMRC's five conditions; SIPP loans to members or connected parties are unauthorised payments.

Investment Control

SSAS

Investment choice is similarly wide but decisions are taken by the trustees, normally unanimously. Up to 11 members can pool their investments at scheme level, supporting larger property purchases and shared family planning. Loanbacks to the sponsoring employer add a unique tool, subject to HMRC's five conditions.

Tax Treatment

Tax relief on contributions is identical at the personal level for both wrappers. Investment growth and rent on UK commercial property are free from UK income tax and CGT inside the pension. Withdrawals are taxed as income at the saver's marginal rate above the 25% tax-free element. The LSA of £268,275 and LSDBA of £1,073,100 apply to both following the abolition of the lifetime allowance from 6 April 2024.

Employer contributions to either structure are typically allowable for corporation tax under the 'wholly and exclusively for the trade' test. For SSAS schemes, the integration with the sponsoring company makes employer contributions a natural planning tool.

Allowances and Limits

  • Annual allowance: £60,000 standard, with tapering for high earners (adjusted income > £260,000, threshold income > £200,000).
  • MPAA: £10,000 once a member flexibly accesses a DC pension.
  • Non-earner contributions: up to £3,600 gross.
  • Pension borrowing: up to 50% of net scheme Assets for both SIPPs and SSAS schemes.
  • SSAS Loan to employer: up to 50% of net scheme assets, five-year term, equal repayments, commercial interest, first-charge security.

Administration and Time Commitment

A SIPP is comparatively low-touch for the saver because the FCA-regulated operator handles administration. A SSAS demands more active engagement from the member-trustees, even where a professional administrator is appointed. Trustee meetings, minutes, valuations, lease management and loanback monitoring all take time. Some family SSAS schemes appoint a professional trustee specifically to manage this workload, both to spread responsibility and to provide continuity if members are away from the Business or unwell.

Borrowing and Property — A Closer Look

Both wrappers can borrow up to 50% of net scheme assets, normally to fund commercial property purchase. SSAS borrowing is calculated at scheme level — useful where members pool assets. SIPP borrowing is at the individual SIPP level. Where members pool a property purchase across multiple SIPPs, each SIPP's borrowing capacity is calculated separately.

On the property side, both wrappers face the same HMRC taxable property rules. The choice between holding a property in a SIPP or a SSAS often comes down to who the members are: an individual buying their own premises may use a full SIPP; a family business with several directors and family employees may use a SSAS for the same property, pooling pensions and supporting succession. The legal documentation, valuation requirements and SDLT and VAT considerations are largely identical between the two routes; the difference is the structure that holds the property and the people who exercise control.

Death Benefits

Both wrappers offer flexible death benefits. Death before age 75 normally allows benefits to pass tax-free up to the LSDBA; death after 75 means beneficiaries pay income tax at their marginal rate. Beneficiary nominations should be reviewed regularly. The IHT treatment of pension death benefits is the subject of announced future changes — savers should follow current GOV.UK guidance and review plans with an adviser well ahead of any future implementation date.

Operational and Service Differences

Day-to-day SIPP operation typically runs through an online platform — login, view valuations, place trades, set up regular contributions, run drawdown. The FCA-regulated operator handles HMRC reporting and benefit payments. For most savers the experience resembles a high-end investment account with pension reporting attached.

A SSAS is more akin to running a small occupational scheme. Trustees meet regularly to make investment and benefit decisions; the SSAS administrator produces accounts, manages HMRC reporting and drafts loan and property documentation; legal and surveyor work is coordinated by the trustees with their professional adviser network. The hands-on nature is part of the appeal for some business owners and a barrier for others.

Transferring Between SIPPs and SSAS

Transfers between SIPPs and SSAS schemes are usually possible, but should be considered carefully. Transferring a SIPP into a SSAS can unlock loanback and property planning. Transferring a SSAS member's share into a SIPP can simplify a member's planning, particularly when they leave the family business or retire from active involvement. Defined benefit transfers in either direction normally require regulated advice. The receiving scheme should be checked for acceptance of any unusual or Illiquid assets before any transfer is initiated.

When Each Wrapper Tends to Suit

  • SIPP — individual saver, contractor, self-employed worker, higher earner without a family business need.
  • SSAS — limited company with multiple directors or family employees, plans involving commercial property and loanbacks.
  • Both can sit alongside workplace pensions, ISAs and Lifetime ISAs as part of a wider plan.

SIPP vs SSAS — Headline Comparison

How the two flexible UK pensions compare in 2026/27.

Key Takeaways

  • SIPPs and SSAS schemes share most tax reliefs and pension rules.
  • Fees differ in structure — SIPPs largely percentage or flat platform; SSAS largely fixed plus transactional.
  • Both can hold UK commercial property; only SSAS can lend back to the sponsoring employer.
  • SSAS schemes place greater administrative and governance demands on members.
  • SIPPs suit individuals; SSAS suits business owners and families.
  • Many UK business owners use both wrappers in combination.
  • Specialist advice is essential before establishing or transferring into a SSAS.